The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1992
Filed:
Dec. 21, 1990
Applicant:
Inventors:
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
558 85 ; 558 95 ; 558177 ;
Abstract
Preparation of phosphites which are stable to hydrolysis from organic phosphites or phosphorus-halogen compounds and an ammonium salt of a hydroxysulfonic acid which is insoluble in water and soluble in an organic solvent. The compounds are useful in making catalysts for the hydroformylation reaction.